From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Dreeam <61569423+Dreeam-qwq@users.noreply.github.com>
Date: Mon, 29 Sep 2025 03:28:55 -0400
Subject: [PATCH] Prevent executing commands if server stopped

The server is executing player's commands when server stopped, but the player didn't disconnect.
Since the server is stopped, the commands execute on current thread instead of the main thread.

It's a kind of weird race condition, not sure what causes it,
so just add a `isStopped` check, like the check under `handleChat`

diff --git a/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 581791bf2892715543f003c36e301e690cc393f1..0d7a00a7865dd79a2aaec6b1060e763e5815f12a 100644
--- a/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -2369,7 +2369,7 @@ public class ServerGamePacketListenerImpl
         final boolean isAfkCommandCooldown = this.performAfkCooldown(packet.command()); // Leaf - Improve Purpur AFK system
         this.tryHandleChat(packet.command(), () -> {
             // CraftBukkit start - SPIGOT-7346: Prevent disconnected players from executing commands
-            if (this.player.hasDisconnected()) {
+            if (this.player.hasDisconnected() || this.server.isStopped()) { // Leaf - Prevent executing commands if server stopped
                 return;
             }
             // CraftBukkit end
@@ -2411,7 +2411,7 @@ public class ServerGamePacketListenerImpl
             final boolean isAfkCommandCooldown = this.performAfkCooldown(packet.command()); // Leaf - Improve Purpur AFK system
             this.tryHandleChat(packet.command(), () -> {
                 // CraftBukkit start - SPIGOT-7346: Prevent disconnected players from executing commands
-                if (this.player.hasDisconnected()) {
+                if (this.player.hasDisconnected() || this.server.isStopped()) { // Leaf - Prevent executing commands if server stopped
                     return;
                 }
                 // CraftBukkit end